Etymology

nullify

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Today it means: To make legally invalid. Full definition →

Proto-Italic *θakos ← Proto-Indo-European *dʰeh₁- ← English null
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The story

  1. Proto-Indo-European*ís?
  2. Proto-Indo-European*h₁óynos
  3. Proto-Italic*oinos
  4. Proto-Italic*noinolos
  5. Latinnūllus
  6. Old Frenchnul
  7. Middle Frenchnu
  8. Englishnull
  9. Proto-Indo-European*dʰeh₁-
  10. Proto-Italic*θakos
  11. English todaynullify

From null + -ify.

Etymology from Wiktionary, CC BY-SA 4.0.